THE "WISCONSIN" SILO. 



39 



which is not acid and water-proof will disintegrate at the joints 

 in a very short time, and thus leave the lining very defective. 



The best paper for silo purposes with which we are acquainted 

 is a 3-ply Giant P. and B. brand manufactured by the Standard 

 Paint Co., of Chicago and New York. It is thick, strong, and acid 

 and water-proof. A silo lining with two thicknesses of good 

 fencing having only small knots, and these thoroughly sound and 

 not black, will make an excellent lining. Great care should be 

 taken to have the two layers of boards break joints at their 

 centers, and the paper should lap not less than 8 to 12 inches. 



The great danger with this type of lining will be that the 

 boards may not press the two layers of paper together close 



Fig. 8. Showing construction of conical roof of round silo, where 

 rafters are not used. The outer circle is the lower edge of the 

 roof, the second is the plate, the third and fourth circles are 

 hoops to which the roof boards are nailed. The view is a plan 

 looking up from the under side. 



